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Publication Detail
A CMOS instrumentation amplifier for wideband spectroscopy systems
Electrical bioimpedance spectroscopy is a fast and relatively easily applicable method for tissue characterization. This paper describes a CMOS instrumentation amplifier based on the principle of current feedback for use in this application. The amplifier was designed in a 0.35 mum CMOS technology and dissipates 420 muW from plusmn1.5 V power supplies. Simulations showed that it has a bandwidth of 2 kHz-1 MHz, a mid-band gain of 20 dB, a CMRR of 101 dB at 1 MHz, and an input-referred noise voltage floor of 11.5 nV/radicHz
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